package Thread;

import java.util.concurrent.Callable;

public class MyCallable implements Callable<String> {
    private int  n;

    public MyCallable(int n){
        this.n = n;
    }

    @Override
    public String call() throws Exception {
        int sum = 0;
        for(int i = 1; i <= n; i++){
            sum += i;
        }
        return "从1加到" + n + "的和为：" + sum;
    }
}
